Y'all are crazy, the book is good! Get your homosexuality out of here and accept you CAN change!
There, now that my mostly same-sex attracted butt has gotten your attention:
Stop telling them to take down the book. They haven't been active since 2020. You expect them to suddenly pop on because they somehow heard their dead account is getting hate, and apologize?
You'll possibly get the stupid Spam Error thing WP gives, could get flagged for spam, possibly lose your account, and for what? To cry at a long dead account? And sending all the hate makes it harder for WP to see the problem and makes their book and account stay longer.
No, not excusing their homophobic/biphobic book. It's stupid. But they probably left out of embarrassment of it. Spamming an account that hasn't been active in 2 years isn't gonna do jack diddly squat. Just report and move on, peeps. It's a waste of precious time.